修改：

【平滑部署】NacosServiceListListenerRegisterer注册器中的更新方法调整

epmet-module/epmet-point/epmet-point-server/src/main/java/com/epmet/config/NacosServiceListListenerRegisterer.java

@@ -8,9 +8,8 @@ import com.alibaba.nacos.api.naming.listener.EventListener;
 import com.alibaba.nacos.api.naming.listener.NamingEvent;
 import com.alibaba.nacos.api.naming.pojo.ListView;
 import com.epmet.commons.tools.exception.ExceptionUtils;
-import com.netflix.client.config.IClientConfig;
+import com.netflix.loadbalancer.DynamicServerListLoadBalancer;
 import com.netflix.loadbalancer.ILoadBalancer;
-import com.netflix.loadbalancer.ZoneAwareLoadBalancer;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
@@ -18,8 +17,6 @@ import org.springframework.cloud.netflix.ribbon.SpringClientFactory;
 import org.springframework.context.annotation.Configuration;
 
 import javax.annotation.PostConstruct;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.*;
@@ -136,18 +133,27 @@ public class NacosServiceListListenerRegisterer {
          * @date 2021.09.22 09:29:16
          */
         private void doRefreshServerList(String serviceName) {
+            // 刷新方式1:反射调用DynamicServerListLoadBalancer中的restOfInit()方法。该方法原来只执行一次，此处不推荐用
+            //ILoadBalancer loadBalancer = springClientFactory.getLoadBalancer(serviceName);
+            //if (loadBalancer instanceof ZoneAwareLoadBalancer) {
+            //    ZoneAwareLoadBalancer zaLoadBalancer = (ZoneAwareLoadBalancer) loadBalancer;
+            //    IClientConfig clientConfig = springClientFactory.getClientConfig(serviceName);
+            //    try {
+            //        Method restOfInitMethod = zaLoadBalancer.getClass().getSuperclass().getDeclaredMethod(REFRESH_SERVER_LIST_METHOD_NAME, IClientConfig.class);
+            //        restOfInitMethod.setAccessible(true);
+            //        restOfInitMethod.invoke(zaLoadBalancer, clientConfig);
+            //    } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
+            //        String errorStackTrace = ExceptionUtils.getErrorStackTrace(e);
+            //        log.error("【LoadBalancer刷新服务列表】失败:{}", errorStackTrace);
+            //    }
+            //}
+
+            // 刷新方式2：DynamicServerListLoadBalancer#updateListOfServers()该方法为ribbon定时刷新服务列表的时候真正调用的方法，但是加了@VisibleForTesting
+            //      暂且 1 try
             ILoadBalancer loadBalancer = springClientFactory.getLoadBalancer(serviceName);
-            if (loadBalancer instanceof ZoneAwareLoadBalancer) {
+            if (loadBalancer instanceof DynamicServerListLoadBalancer) {
-                ZoneAwareLoadBalancer zaLoadBalancer = (ZoneAwareLoadBalancer) loadBalancer;
+                DynamicServerListLoadBalancer dslb = (DynamicServerListLoadBalancer) loadBalancer;
-                IClientConfig clientConfig = springClientFactory.getClientConfig(serviceName);
+                dslb.updateListOfServers();
-                try {
-                    Method restOfInitMethod = zaLoadBalancer.getClass().getSuperclass().getDeclaredMethod(REFRESH_SERVER_LIST_METHOD_NAME, IClientConfig.class);
-                    restOfInitMethod.setAccessible(true);
-                    restOfInitMethod.invoke(zaLoadBalancer, clientConfig);
-                } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
-                    String errorStackTrace = ExceptionUtils.getErrorStackTrace(e);
-                    log.error("【LoadBalancer刷新服务列表】失败:{}", errorStackTrace);
-                }
             }
         }
     }

epmet-module/gov-org/gov-org-server/src/main/java/com/epmet/config/NacosServiceListListenerRegisterer.java

@@ -8,9 +8,8 @@ import com.alibaba.nacos.api.naming.listener.EventListener;
 import com.alibaba.nacos.api.naming.listener.NamingEvent;
 import com.alibaba.nacos.api.naming.pojo.ListView;
 import com.epmet.commons.tools.exception.ExceptionUtils;
-import com.netflix.client.config.IClientConfig;
+import com.netflix.loadbalancer.DynamicServerListLoadBalancer;
 import com.netflix.loadbalancer.ILoadBalancer;
-import com.netflix.loadbalancer.ZoneAwareLoadBalancer;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
@@ -18,8 +17,6 @@ import org.springframework.cloud.netflix.ribbon.SpringClientFactory;
 import org.springframework.context.annotation.Configuration;
 
 import javax.annotation.PostConstruct;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.*;
@@ -136,18 +133,27 @@ public class NacosServiceListListenerRegisterer {
          * @date 2021.09.22 09:29:16
          */
         private void doRefreshServerList(String serviceName) {
+            // 刷新方式1:反射调用DynamicServerListLoadBalancer中的restOfInit()方法。该方法原来只执行一次，此处不推荐用
+            //ILoadBalancer loadBalancer = springClientFactory.getLoadBalancer(serviceName);
+            //if (loadBalancer instanceof ZoneAwareLoadBalancer) {
+            //    ZoneAwareLoadBalancer zaLoadBalancer = (ZoneAwareLoadBalancer) loadBalancer;
+            //    IClientConfig clientConfig = springClientFactory.getClientConfig(serviceName);
+            //    try {
+            //        Method restOfInitMethod = zaLoadBalancer.getClass().getSuperclass().getDeclaredMethod(REFRESH_SERVER_LIST_METHOD_NAME, IClientConfig.class);
+            //        restOfInitMethod.setAccessible(true);
+            //        restOfInitMethod.invoke(zaLoadBalancer, clientConfig);
+            //    } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
+            //        String errorStackTrace = ExceptionUtils.getErrorStackTrace(e);
+            //        log.error("【LoadBalancer刷新服务列表】失败:{}", errorStackTrace);
+            //    }
+            //}
+
+            // 刷新方式2：DynamicServerListLoadBalancer#updateListOfServers()该方法为ribbon定时刷新服务列表的时候真正调用的方法，但是加了@VisibleForTesting
+            //      暂且 1 try
             ILoadBalancer loadBalancer = springClientFactory.getLoadBalancer(serviceName);
-            if (loadBalancer instanceof ZoneAwareLoadBalancer) {
+            if (loadBalancer instanceof DynamicServerListLoadBalancer) {
-                ZoneAwareLoadBalancer zaLoadBalancer = (ZoneAwareLoadBalancer) loadBalancer;
+                DynamicServerListLoadBalancer dslb = (DynamicServerListLoadBalancer) loadBalancer;
-                IClientConfig clientConfig = springClientFactory.getClientConfig(serviceName);
+                dslb.updateListOfServers();
-                try {
-                    Method restOfInitMethod = zaLoadBalancer.getClass().getSuperclass().getDeclaredMethod(REFRESH_SERVER_LIST_METHOD_NAME, IClientConfig.class);
-                    restOfInitMethod.setAccessible(true);
-                    restOfInitMethod.invoke(zaLoadBalancer, clientConfig);
-                } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
-                    String errorStackTrace = ExceptionUtils.getErrorStackTrace(e);
-                    log.error("【LoadBalancer刷新服务列表】失败:{}", errorStackTrace);
-                }
             }
         }
     }